Ecclesiastes 10:12-14King James Version (KJV)
12 The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.
13 The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.
14 A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him?
Ecclesiastes 10:20King James Version (KJV)
20 Curse not the king, no not in thy thought; and curse not the rich in thy bedchamber: for a bird of the air shall carry the voice, and that which hath wings shall tell the matter.